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plasma-framework/widgets/icon.cpp
Aaron J. Seigo b764db9438 use a KIcon here to get the proper loading 
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=698791
2007-08-11 03:30:54 +00:00

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/*
* Copyright 2007 by Aaron Seigo <aseigo@kde.org>
* Copyright 2007 by Riccardo Iaconelli <riccardo@kde.org>
* Copyright 2007 by Matt Broadstone <mbroadst@gmail.com>
* Copyright 2006-2007 Fredrik Höglund <fredrik@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "icon.h"
#include "icon_p.h"
#include <QAction>
#include <QApplication>
#include <QPainter>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsView>
#include <QStyleOptionGraphicsItem>
#include <QTextLayout>
//#define BACKINGSTORE_BLUR_HACK
#ifdef BACKINGSTORE_BLUR_HACK
#include <private/qwindowsurface_p.h>
#endif
#include <KImageEffect>
#include <KIconEffect>
#include <KIconLoader>
#include <KIcon>
#include <K3Icon>
#include <KUrl>
#include <KRun>
#include <KMimeType>
#include <KDebug>
#include "phase.h"
#include "svg.h"
#include "effects/blur.cpp"
namespace Plasma
{
Icon::Private::Private()
: svg("widgets/iconbutton"),
svgElements(0),
size(48*1.1, 48*1.1),
iconSize(48, 48),
state(Private::NoState),
orientation(Qt::Vertical),
calculateSizeRequested(true) // First time always true
{
svg.setContentType(Plasma::Svg::ImageSet);
svg.resize(size);
//TODO: recheck when svg changes
checkSvgElements();
}
Icon::Private::~Private()
{
qDeleteAll(cornerActions);
}
void Icon::Private::checkSvgElements()
{
if (svg.elementExists("background")) {
svgElements |= SvgBackground;
}
if (svg.elementExists("background-hover")) {
svgElements |= SvgBackgroundHover;
}
if (svg.elementExists("background-pressed")) {
svgElements |= SvgBackgroundPressed;
}
if (svg.elementExists("foreground")) {
svgElements |= SvgForeground;
}
if (svg.elementExists("foreground-hover")) {
svgElements |= SvgForegroundHover;
}
if (svg.elementExists("foreground-pressed")) {
svgElements |= SvgForegroundPressed;
}
if (svg.elementExists("minibutton")) {
svgElements |= SvgMinibutton;
}
if (svg.elementExists("minibutton-hover")) {
svgElements |= SvgMinibuttonHover;
}
if (svg.elementExists("minibutton-pressed")) {
svgElements |= SvgMinibuttonPressed;
}
}
IconAction::IconAction(Icon* icon, QAction *action)
: m_icon(icon),
m_action(action),
m_hovered(false),
m_pressed(false),
m_visible(false),
m_animationId(-1)
{
}
void IconAction::show()
{
if (m_animationId) {
Phase::self()->stopElementAnimation(m_animationId);
}
rebuildPixmap();
m_animationId = Phase::self()->animateElement(m_icon, Phase::ElementAppear);
Phase::self()->setAnimationPixmap(m_animationId, m_pixmap);
m_visible = true;
}
void IconAction::hide()
{
if (m_animationId) {
Phase::self()->stopElementAnimation(m_animationId);
}
rebuildPixmap();
m_animationId = Phase::self()->animateElement(m_icon, Phase::ElementDisappear);
Phase::self()->setAnimationPixmap(m_animationId, m_pixmap);
m_visible = false;
}
bool IconAction::isVisible() const
{
return m_visible;
}
bool IconAction::isPressed() const
{
return m_pressed;
}
bool IconAction::isHovered() const
{
return m_hovered;
}
void IconAction::setSelected(bool selected)
{
m_selected = selected;
}
bool IconAction::isSelected() const
{
return m_selected;
}
void IconAction::setRect(const QRectF &rect)
{
m_rect = rect;
}
QRectF IconAction::rect() const
{
return m_rect;
}
void IconAction::rebuildPixmap()
{
// Determine proper QIcon mode based on selection status
QIcon::Mode mode = QIcon::Normal;
if (m_selected) {
mode = QIcon::Selected;
}
// Draw everything
m_pixmap = QPixmap(26, 26);
m_pixmap.fill(Qt::transparent);
int element = Icon::Private::SvgMinibutton;
if (m_pressed) {
element = Icon::Private::SvgMinibuttonPressed;
} else if (m_hovered) {
element = Icon::Private::SvgMinibuttonHover;
}
QPainter painter(&m_pixmap);
m_icon->drawActionButtonBase(&painter, m_pixmap.size(), element);
m_action->icon().paint(&painter, 2, 2, 22, 22, Qt::AlignCenter, mode);
}
bool IconAction::event(QEvent::Type type, const QPointF &pos)
{
switch (type) {
case QEvent::MouseButtonPress: {
setSelected(m_rect.contains(pos));
return isSelected();
}
break;
case QEvent::MouseMove: {
bool wasSelected = isSelected();
bool active = m_rect.contains(pos);
setSelected(wasSelected && active);
return (wasSelected != isSelected()) || active;
}
break;
case QEvent::MouseButtonRelease: {
// kDebug() << "IconAction::event got a QEvent::MouseButtonRelease, " << isSelected();
bool wasSelected = isSelected();
setSelected(false);
if (wasSelected) {
m_action->trigger();
}
return wasSelected;
}
break;
case QEvent::GraphicsSceneHoverEnter:
m_pressed = false;
m_hovered = true;
break;
case QEvent::GraphicsSceneHoverLeave:
m_pressed = false;
m_hovered = false;
break;
default:
break;
}
return false;
}
Phase::AnimId IconAction::animationId() const
{
return m_animationId;
}
QAction* IconAction::action() const
{
return m_action;
}
void IconAction::paint(QPainter *painter) const
{
painter->drawPixmap(m_rect.toRect(), Phase::self()->animationResult(m_animationId));
}
Icon::Icon(QGraphicsItem *parent)
: Plasma::Widget(parent),
d(new Private)
{
init();
}
Icon::Icon(const QString &text, QGraphicsItem *parent)
: Plasma::Widget(parent),
d(new Private)
{
setText(text);
init();
}
Icon::Icon(const QIcon &icon, const QString &text, QGraphicsItem *parent)
: Plasma::Widget(parent),
d(new Private)
{
setText(text);
setIcon(icon);
init();
}
Icon::~Icon()
{
delete d;
}
void Icon::init()
{
// setAcceptedMouseButtons(Qt::LeftButton);
setAcceptsHoverEvents(true);
int focusHMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin);
int focusVMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameVMargin);
// Margins for horizontal mode (list views, tree views, table views)
d->setHorizontalMargin(Private::TextMargin, focusHMargin, focusVMargin);
d->setHorizontalMargin(Private::IconMargin, focusHMargin, focusVMargin);
d->setHorizontalMargin(Private::ItemMargin, 0, 0);
// Margins for vertical mode (icon views)
d->setVerticalMargin(Private::TextMargin, 6, 2);
d->setVerticalMargin(Private::IconMargin, focusHMargin, focusVMargin);
d->setVerticalMargin(Private::ItemMargin, 0, 0);
calculateSize();
}
void Icon::addAction(QAction *action)
{
int count = d->cornerActions.count();
if (count > 3) {
kDebug() << "Icon::addAction(QAction*) no more room for more actions!";
}
IconAction* iconAction = new IconAction(this, action);
d->cornerActions.append(iconAction);
connect(action, SIGNAL(destroyed(QObject*)), this, SLOT(actionDestroyed(QObject*)));
//TODO: fewer magic numbers, please =) 38, 32, 6, etc... needs to go.
// at the very least static const ints with nice names.
switch (count) {
case Private::TopLeft:
iconAction->setRect(QRectF(6, 6, 32, 32));
break;
case Private::TopRight:
iconAction->setRect(QRectF(d->size.width() - 38, 6, 32, 32));
break;
case Private::BottomLeft:
iconAction->setRect(QRectF(6, d->size.height() - 38, 32, 32));
break;
case Private::BottomRight:
iconAction->setRect(QRectF(d->size.width() - 38, d->size.height() - 38, 32, 32));
break;
}
}
void Icon::actionDestroyed(QObject* action)
{
QList<IconAction*>::iterator it = d->cornerActions.begin();
while (it != d->cornerActions.end()) {
if ((*it)->action() == action) {
d->cornerActions.erase(it);
break;
}
}
update(); // redraw since an action has been deleted.
}
QSizeF Icon::Private::displaySizeHint(const QStyleOptionGraphicsItem *option) const
{
QString label = text;
// const qreal maxWidth = (orientation == Qt::Vertical) ? iconSize.width() + 10 : 32757;
// NOTE: find a way to use the other layoutText, it currently returns nominal width, when
// we actually need the actual width.
// To compute the nominal size for the label + info, we'll just append
// the information string to the label
const QString info = infoText;
if (!info.isEmpty())
label += QString(QChar::LineSeparator) + info;
QTextLayout layout;
setLayoutOptions(layout, option);
QSizeF size = layoutText(layout, option, label, QSizeF(iconSize.width() + 10, 32757));
return addMargin(size, TextMargin);
}
void Icon::calculateSize()
{
if (d->calculateSizeRequested = true) {
// We do this to get size hint information before the icon has been drawn, as
// we have no access to the style option before that time. So we create a dummy.
QStyleOptionGraphicsItem option;
option.state = QStyle::State_None;
option.rect = boundingRect().toRect();
calculateSize(&option);
}
else {
d->calculateSizeRequested = true;
}
}
void Icon::calculateSize(const QStyleOptionGraphicsItem *option)
{
if (!d->calculateSizeRequested)
return;
prepareGeometryChange();
d->setActiveMargins();
const QSizeF displaySize = d->displaySizeHint(option);
const QSizeF decorationSize = d->addMargin(d->iconSize, Private::IconMargin);
QSizeF newSize;
if (d->orientation == Qt::Vertical)
{
newSize.rwidth() = qMax(decorationSize.width(), displaySize.width());
newSize.rheight() = decorationSize.height() + displaySize.height() + 1;
}
else
{
newSize.rwidth() = decorationSize.width() + displaySize.width() + 1;
newSize.rheight() = qMax(decorationSize.height(), displaySize.height());
}
d->size = d->addMargin(newSize, Private::ItemMargin);
d->svg.resize(d->size);
d->calculateSizeRequested = false;
int count = 0;
foreach (IconAction* iconAction, d->cornerActions) {
//TODO: fewer magic numbers, please =) 38, 32, 6, etc... needs to go.
// at the very least static const ints with nice names.
switch (count) {
case Private::TopLeft:
// top left never changes, so don't bother setting it
//iconAction->setRect(QRectF(6, 6, 32, 32));
break;
case Private::TopRight:
iconAction->setRect(QRectF(d->size.width() - 38, 6, 32, 32));
break;
case Private::BottomLeft:
iconAction->setRect(QRectF(6, d->size.height() - 38, 32, 32));
break;
case Private::BottomRight:
iconAction->setRect(QRectF(d->size.width() - 38, d->size.height() - 38, 32, 32));
break;
}
++count;
}
update();
}
QRectF Icon::boundingRect() const
{
return QRectF(QPointF(0, 0), d->size);
}
void Icon::Private::drawBackground(QPainter *painter)
{
QString element;
if (svgElements & Private::SvgBackground) {
element = "background";
}
switch (state) {
case Private::NoState:
break;
case Private::HoverState:
if (svgElements & Private::SvgBackgroundHover) {
element = "background-hover";
}
break;
case Private::PressedState:
if (svgElements & Private::SvgBackgroundPressed) {
element = "background-pressed";
} else if (svgElements & Private::SvgBackgroundHover) {
element = "background-hover";
}
break;
}
if (!element.isEmpty()) {
svg.paint(painter, 0, 0, element);
}
}
void Icon::Private::drawForeground(QPainter *painter)
{
QString element;
if (svgElements & Private::SvgForeground) {
element = "foreground";
}
switch (state) {
case Private::NoState:
break;
case Private::HoverState:
if (svgElements & Private::SvgForegroundHover) {
element = "foreground-hover";
}
break;
case Private::PressedState:
if (svgElements & Private::SvgForegroundPressed) {
element = "foreground-pressed";
} else if (svgElements & Private::SvgForegroundHover) {
element = "foreground-hover";
}
break;
}
if (!element.isEmpty()) {
svg.paint(painter, 0, 0, element);
}
}
QPixmap Icon::Private::decoration(const QStyleOptionGraphicsItem *option) const
{
QPixmap result;
QIcon::Mode mode = option->state & QStyle::State_Enabled ? QIcon::Normal : QIcon::Disabled;
QIcon::State state = option->state & QStyle::State_Open ? QIcon::On : QIcon::Off;
const QSize size = icon.actualSize(iconSize.toSize(), mode, state);
result = icon.pixmap(size, mode, state);
if (!result.isNull())
{
// Apply the configured hover effect NOTE: This has no visible effect because we
// do drawForeground() -MB
if (option->state & QStyle::State_MouseOver) {
KIconEffect *effect = KIconLoader::global()->iconEffect();
// Note that in KIconLoader terminology, active = hover.
// ### We're assuming that the icon group is desktop/filemanager, since this
// is KFileItemDelegate.
if (effect->hasEffect(K3Icon::Desktop, K3Icon::ActiveState)) {
result = effect->apply(result, K3Icon::Desktop, K3Icon::ActiveState);
}
}
}
return result;
}
QPointF Icon::Private::iconPosition(const QStyleOptionGraphicsItem *option, const QPixmap &pixmap) const
{
const QRectF itemRect = subtractMargin(option->rect, Private::ItemMargin);
Qt::Alignment alignment = Qt::AlignHCenter | Qt::AlignTop; // NOTE: This assumes always top-center -MB
// Compute the nominal decoration rectangle
const QSizeF size = addMargin(iconSize, Private::IconMargin);
const QRect iconRect = QStyle::alignedRect(option->direction, alignment, size.toSize(), itemRect.toRect());
// Position the pixmap in the center of the rectangle
QRect pixmapRect = pixmap.rect();
pixmapRect.moveCenter(iconRect.center());
// add a gimmicky margin of 5px to y, TEMP TEMP TEMP
// pixmapRect = pixmapRect.adjusted(0, 5, 0, 0);
return QPointF(pixmapRect.topLeft());
}
QRectF Icon::Private::labelRectangle(const QStyleOptionGraphicsItem *option, const QPixmap &icon,
const QString &string) const
{
Q_UNUSED(string)
if (icon.isNull())
return option->rect;
const QSizeF decoSize = addMargin(iconSize, Private::IconMargin);
const QRectF itemRect = subtractMargin(option->rect, Private::ItemMargin);
QRectF textArea(QPointF(0, 0), itemRect.size());
textArea.setTop(decoSize.height() + 1);
textArea.translate(itemRect.topLeft());
return QRectF(QStyle::visualRect(option->direction, option->rect, textArea.toRect()));
}
// Lays the text out in a rectangle no larger than constraints, eliding it as necessary
QSizeF Icon::Private::layoutText(QTextLayout &layout, const QStyleOptionGraphicsItem *option,
const QString &text, const QSizeF &constraints) const
{
const QSizeF size = layoutText(layout, text, constraints.width());
if (size.width() > constraints.width() || size.height() > constraints.height())
{
const QString elided = elidedText(layout, option, constraints);
return layoutText(layout, elided, constraints.width());
}
return size;
}
// Lays the text out in a rectangle no wider than maxWidth
QSizeF Icon::Private::layoutText(QTextLayout &layout, const QString &text, qreal maxWidth) const
{
QFontMetricsF metrics(layout.font());
qreal leading = metrics.leading();
qreal height = 0.0;
qreal widthUsed = 0.0;
QTextLine line;
layout.setText(text);
layout.beginLayout();
while ((line = layout.createLine()).isValid())
{
line.setLineWidth(maxWidth);
height += leading;
line.setPosition(QPointF(0.0, height));
height += line.height();
widthUsed = qMax(widthUsed, line.naturalTextWidth());
}
layout.endLayout();
return QSizeF(widthUsed, height);
}
// Elides the text in the layout, by iterating over each line in the layout, eliding
// or word breaking the line if it's wider than the max width, and finally adding an
// ellipses at the end of the last line, if there are more lines than will fit within
// the vertical size constraints.
QString Icon::Private::elidedText(QTextLayout &layout, const QStyleOptionGraphicsItem *option,
const QSizeF &size) const
{
Q_UNUSED(option)
QFontMetricsF metrics(layout.font());
const QString text = layout.text();
qreal maxWidth = size.width();
qreal maxHeight = size.height();
qreal height = 0;
// If the string contains a single line of text it shouldn't be word wrapped
if (text.indexOf(QChar::LineSeparator) == -1)
return metrics.elidedText(text, Qt::ElideRight, maxWidth);
// Elide each line that has already been laid out in the layout.
QString elided;
elided.reserve(text.length());
for (int i = 0; i < layout.lineCount(); i++)
{
QTextLine line = layout.lineAt(i);
int start = line.textStart();
int length = line.textLength();
height += metrics.leading();
if (height + line.height() + metrics.lineSpacing() > maxHeight)
{
// Unfortunately, if the line ends because of a line separator, elidedText() will be too
// clever and keep adding lines until it finds one that's too wide.
if (line.naturalTextWidth() < maxWidth && text[start + length - 1] == QChar::LineSeparator)
elided += text.mid(start, length - 1);
else
elided += metrics.elidedText(text.mid(start), Qt::ElideRight, maxWidth);
break;
}
else if (line.naturalTextWidth() > maxWidth)
elided += metrics.elidedText(text.mid(start, length), Qt::ElideRight, maxWidth);
else
elided += text.mid(start, length);
height += line.height();
}
return elided;
}
void Icon::Private::layoutTextItems(const QStyleOptionGraphicsItem *option,
const QPixmap &icon, QTextLayout *labelLayout,
QTextLayout *infoLayout, QRectF *textBoundingRect) const
{
bool showInformation = false;
setLayoutOptions(*labelLayout, option);
QFontMetricsF fm(labelLayout->font());
const QRectF textArea = labelRectangle(option, icon, text);
QRectF textRect = subtractMargin(textArea, Private::TextMargin);
// Sizes and constraints for the different text parts
QSizeF maxLabelSize = textRect.size();
QSizeF maxInfoSize = textRect.size();
QSizeF labelSize;
QSizeF infoSize;
// If we have additional info text, and there's space for at least two lines of text,
// adjust the max label size to make room for at least one line of the info text
if (!infoText.isEmpty() && textRect.height() >= fm.lineSpacing() * 2)
{
infoLayout->setFont(labelLayout->font());
infoLayout->setTextOption(labelLayout->textOption());
maxLabelSize.rheight() -= fm.lineSpacing();
showInformation = true;
}
// Lay out the label text, and adjust the max info size based on the label size
labelSize = layoutText(*labelLayout, option, text, maxLabelSize);
maxInfoSize.rheight() -= labelSize.height();
// Lay out the info text
if (showInformation)
infoSize = layoutText(*infoLayout, option, infoText, maxInfoSize);
else
infoSize = QSizeF(0, 0);
// Compute the bounding rect of the text
const Qt::Alignment alignment = labelLayout->textOption().alignment();
const QSizeF size(qMax(labelSize.width(), infoSize.width()), labelSize.height() + infoSize.height());
*textBoundingRect = QStyle::alignedRect(option->direction, alignment, size.toSize(), textRect.toRect());
// Compute the positions where we should draw the layouts
labelLayout->setPosition(QPointF(textRect.x(), textBoundingRect->y()));
infoLayout->setPosition(QPointF(textRect.x(), textBoundingRect->y() + labelSize.height()));
}
QBrush Icon::Private::foregroundBrush(const QStyleOptionGraphicsItem *option) const
{
const QPalette::ColorGroup group = option->state & QStyle::State_Enabled ?
QPalette::Normal : QPalette::Disabled;
// Always use the highlight color for selected items
if (option->state & QStyle::State_Selected)
return option->palette.brush(group, QPalette::HighlightedText);
return option->palette.brush(group, QPalette::Text);
}
QBrush Icon::Private::backgroundBrush(const QStyleOptionGraphicsItem *option) const
{
const QPalette::ColorGroup group = option->state & QStyle::State_Enabled ?
QPalette::Normal : QPalette::Disabled;
QBrush background(Qt::NoBrush);
// Always use the highlight color for selected items
if (option->state & QStyle::State_Selected)
background = option->palette.brush(group, QPalette::Highlight);
return background;
}
void Icon::Private::drawTextItems(QPainter *painter, const QStyleOptionGraphicsItem *option,
const QTextLayout &labelLayout, const QTextLayout &infoLayout) const
{
QPen pen(foregroundBrush(option), 0);
painter->setPen(pen);
labelLayout.draw(painter, QPointF());
if (!infoLayout.text().isEmpty())
{
QColor color;
if (option->state & QStyle::State_Selected)
{
color = option->palette.color(QPalette::HighlightedText);
color.setAlphaF(.5);
} else
color = option->palette.color(QPalette::Highlight);
painter->setPen(color);
infoLayout.draw(painter, QPointF());
}
}
void Icon::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option)
Q_UNUSED(widget)
#ifdef BACKINGSTORE_BLUR_HACK
if (d->state == Private::HoverState && scene()) {
QList<QGraphicsView*> views = scene()->views();
if (views.count() > 0) {
QPixmap* pix = static_cast<QPixmap*>(views[0]->windowSurface()->paintDevice());
QImage image(boundingRect().size().toSize(), QImage::Format_ARGB32_Premultiplied);
{
QPainter p(&image);
p.drawPixmap(image.rect(), *pix, sceneBoundingRect());
}
expblur<16,7>(image, 8);
painter->drawImage(0, 0, image);
}
}
#endif
calculateSize(option);
d->setActiveMargins();
// Compute the metrics, and lay out the text items
// ========================================================================
QPixmap icon = d->decoration(option);
const QPointF iconPos = d->iconPosition(option, icon);
QTextLayout labelLayout, infoLayout;
QRectF textBoundingRect;
d->layoutTextItems(option, icon, &labelLayout, &infoLayout, &textBoundingRect);
d->svg.resize(d->size);
d->drawBackground(painter);
// draw icon
painter->drawPixmap(iconPos, icon);
d->drawForeground(painter);
// Draw corner actions
foreach (IconAction *action, d->cornerActions) {
if (action->animationId()) {
action->paint(painter);
}
}
// Draw text last because its overlayed
d->drawTextItems(painter, option, labelLayout, infoLayout);
}
void Icon::drawActionButtonBase(QPainter* painter, const QSize &size, int element)
{
// Determine proper svg element
QString id;
if (d->svgElements & Private::SvgMinibutton) {
id = "minibutton";
}
if (element == Private::SvgMinibuttonPressed) {
if (d->svgElements & Private::SvgMinibuttonPressed) {
id = "minibutton-pressed";
} else if (d->svgElements & Private::SvgMinibuttonHover) {
id = "minibutton-hover";
}
} else if (element == Icon::Private::SvgMinibuttonHover &&
d->svgElements & Private::SvgMinibuttonHover) {
id = "minibutton-hover";
}
if (!id.isEmpty()) {
d->svg.resize(size);
d->svg.paint(painter, 0, 0, id);
}
}
void Icon::setText(const QString& text)
{
d->text = text;
calculateSize();
}
QString Icon::text() const
{
return d->text;
}
void Icon::setInfoText(const QString& text)
{
d->infoText = text;
calculateSize();
}
QString Icon::infoText() const
{
return d->infoText;
}
QIcon Icon::icon() const
{
return d->icon;
}
void Icon::setIcon(const QString& icon)
{
if (icon.isEmpty()) {
setIcon(QIcon());
return;
}
setIcon(KIcon(icon));
}
void Icon::setIcon(const QIcon& icon)
{
d->icon = icon;
calculateSize();
}
QSizeF Icon::iconSize() const
{
return d->iconSize;
}
void Icon::setIconSize(const QSizeF& s)
{
d->iconSize = s;
calculateSize();
}
void Icon::setIconSize(int w, int h)
{
setIconSize(QSizeF(w, h));
}
bool Icon::isDown()
{
return d->state == Private::PressedState;
}
void Icon::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
foreach (IconAction *action, d->cornerActions) {
action->event(event->type(), event->pos());
}
d->state = Private::PressedState;
QGraphicsItem::mousePressEvent(event);
update();
}
void Icon::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
bool inside = boundingRect().contains(event->pos());
Private::ButtonState was = d->state;
if (inside) {
d->state = Private::HoverState;
foreach (IconAction *action, d->cornerActions) {
if (action->event(event->type(), event->pos())) {
inside = false;
break;
}
}
}
else if (was == Private::PressedState) {
emit pressed(false);
if (inside) {
emit clicked();
}
d->state = Private::NoState;
}
else {
d->state = Private::NoState;
}
QGraphicsItem::mouseReleaseEvent(event);
update();
}
void Icon::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
foreach (IconAction *action, d->cornerActions) {
action->show();
action->event(event->type(), event->pos());
}
d->state = Private::HoverState;
QGraphicsItem::hoverEnterEvent(event);
}
void Icon::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
foreach (IconAction *action, d->cornerActions) {
action->hide();
action->event(event->type(), event->pos());
}
d->state = Private::NoState;
QGraphicsItem::hoverLeaveEvent(event);
}
void Icon::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (d->state == Private::PressedState) {
d->state = Private::HoverState;
}
QGraphicsItem::mouseMoveEvent(event);
}
/*
QSizeF Icon::sizeHint() const
{
return d->size;
}
QSizeF Icon::minimumSize() const
{
return d->size; // probably should be more flexible on this =)
}
QSizeF Icon::maximumSize() const
{
return d->size;
}
Qt::Orientations Icon::expandingDirections() const
{
return Qt::Horizontal;
}
bool Icon::hasHeightForWidth() const
{
return true;
}
qreal Icon::heightForWidth(qreal w) const
{
return w; //FIXME: we shouldn't assume squareness but actually calculate based on text and what not
}
bool Icon::hasWidthForHeight() const
{
return true;
}
qreal Icon::widthForHeight(qreal h) const
{
return h; //FIXME: we shouldn't assume squareness but actually calculate based on text and what not
}
QRectF Icon::geometry() const
{
return boundingRect();
}
void Icon::setGeometry(const QRectF &r)
{
// TODO: this is wrong, but we should probably never call setGeometry anyway!
setIconSize(r.size());
setPos(r.x(),r.y());
}
*/
} // namespace Plasma
#include "icon.moc"
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